Welcome to the world of Mt. Ebott, a world populated by humans on the Surface, and Monsters in the Underground that were sealed away many years ago by the Humans. Our keyblade wielding adventurers Rick and Chloe find this world the first of many on their adventures, what sort of dangers await them? What sort of friends will they meet? Come along and find out.

Hearts. Or Souls. Whichever term works. Manifestations of one's being. But what would happen if those very Souls. The one's pivotal to the world's, no, MANY world's fates end up vanishing from those worlds? That is up to Sora and his new friends to find out what caused these disappearances and stop whatever trouble is brewing!

Sora has been reunited with Riku and Kairi at Destiny Islands. Everyone is happy, and the Destiny Islands are safe, Right? Wrong. Right in the middle of the Summer Solstice, Destiny Islands has cracked open, revealing a massive drop, straight into The Underground. The ocean waves start getting stormy, and sora's only chance is to jump into the hole, where Monsters await... (lemon?)

Sora finds himself in a new world, without his friends by his side. His attempts to escape the underground and find his friends lead him into an adventure bigger than what he'd expected.

In this AU, the Underground is under an alternate version of Destiny Islands. After Sora, Frisk, Riku, and Kairi fall in, Heartless attack and Keyblades are introduced. Will the monsters be freed from the Underground? Will Sora and co. defeat the Heartless and save Destiny Islands? Find out in this epic crossover between Undertale and Kingdom Hearts! [DISCONTINUED]

Perhaps Sora should've been more careful in his travels. Or perhaps not. As it would seem, the places he never intended to go are the places he's needed the most.

Sora and Company end up in the world of Undertale and help Frisk venture through the Underground. Of course their presence seems to make things weirder than usual as Heartless that have never been around pop up and mess with everything. Not to mention the gang has to get used to this world's version of "fighting" and try to make friends with the Monsters who inhabit the Underground

What happens when Undyne finds Xaldin training in her favorite training spot?

This world is unlike any you've ever been to. But, a world in need is still a world in need. You would rather risk it all to keep any world from disappearing completely than sit back and watch it blink out of the sky. But, is this world worth saving? Or will you help it destroy itself? (2nd person perspective experiment, feedback is encouraged!) Slow updates for a while!

Frisk, After reading Kairi's Grandmother's Storybook, Discovers the ultimate weapon- a Keyblade. Join in as Frisk meets characters from Undertale and Kingdom Hearts combined, fighting to protect the only thing that truly matters- her Family. But what will happen when she discovers that she has a chance to save Asriel? Will she give up her Keyblade? Or keep it to save others?

Undertale AU. Kairi escucha la leyenda del monte Ebott, así que se adentra en el sin saber lo que le esperaba. Que misterios le esperarán a nuestra pequeña niña humana en este mundo?- Advertencia: no aparece ningún personaje de Undertale fuera de Flowey, los personajes tendrán un 70-30 de personalidad (70% Frisk - 30%Kairi).

Undertale AU. Kairi escucha la leyenda del monte Ebott, así que se adentra en el sin saber lo que le esperaba. Que misterios le esperarán a nuestra pequeña niña humana en este mundo?- Advertencia: no aparece ningún personaje de Undertale fuera de Flowey, los personajes tendrán un 70-30 de personalidad (70% Frisk - 30%Kairi).

X-Tale (Pronounced as "Cross Tale") has Frisk, Papyrus, and Undyne on a world-hopping journey to find Sans who vanished after dark creatures invaded their world.

The journey seems almost over. Frisk, Sans, and Papyrus arrive in New Home, hoping to sway Asriel from the path of darkness he's chosen. But it doesn't go nearly as well as they hoped.

This one-shot story tells a tale before my main story Kingdom Rose and Sora's visit to the underground? But, when heartless infect an all-powerful skeleton will Sora have what it takes to win or will he have a bad time?

Chara and Asriel take the Mark of Mastery Exam to prepare to defeat Chara once and for all. However, they were separated long ago. Frisk doesn't find themself alone, however- Chara has been guiding them most of the way. Towards the end of the journey, things have long strayed from a simple Mark of Mastery Exam. Chara has set them on a different path, and now the two find themselve

Frisk, the keyblade wielder, has been fairly pacifist on their adventures in the Underground. However, a mysterious stranger seems determined to prove that not everything in the Underground can be solved without violence...

Somewhere in the Underground, there exists a special kind of monster. This monster is artificially created, without a soul. They say this monster has a unique power, allowing it to manipulate the memories of those with high amounts of determination. It bides its time in what was formerly their home, waiting for its target to come to it...

KingdomTale is an AU fanfiction of Toby Fox's Undertale. In this fic, the setting of Undertale is intact, but certain elements are replaced with elements from the Kingdom Hearts games. Based off MadAsThyHatter's artwork on DeviantArt. Updates every Sunday! (This is my first fanfic, so any kind of constructive feedback would be immensely appreciated!)

One shot. Different take on the genoside run. After killing every monster in the underground, Frisk finnaly makes it to he king of all monsters and kills him. But what does that awaken inside her heart?